Which ancient civilization invented the first known point-of-sale receipt system, using clay tablets to record transactions and provide customers with proof of purchase?

Before digital payments and modern stores, ancient civilizations developed sophisticated systems for trade and commerce. These early retail innovations laid the groundwork for today's commercial landscape. This poll explores how ancient societies approached product development, marketing, and sales systems in ways that were remarkably advanced for their time. Test your knowledge about the retail innovations that emerged thousands of years ago!

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Mesopotamia (Sumerians, circa 3500 BCE)
Ancient Egypt (circa 3000 BCE)
Indus Valley Civilization (circa 2600 BCE)
Ancient China (Shang Dynasty, circa 1600 BCE)